Hi Altemose,
I don't ask too much from my DAWs. Basic demo stuff is what I do. Touch of reverb here and there. Usually 4 tracks is good enough. Then I mix it down to an mp3. I expect GarageBand to work, although from what I remember it keeps all training wheels firmly planted on the ground and adds effect / compression as it sees fit. Not something I really like there. But we will see. I'm starting to think music production is all I will get out of this, whether it's on 9, Jag, Panther or Tiger.
Although I'm already considering getting a newer 2008/2009 MacBook to use for everything. Prices are reasonable. I have a 2 year old Dell laptop I just acquired and fixed as well. Considering putting mac money (Gasp) into it for faster SSD drive and memory. But man I do like Macs. Also like to stay up to date with current software, also like to use old gear...yeah, I'm a mess -all over the board. I have an iPhone 3gs I charged yesterday just to play with it. The sound was about as nice as I remember coming out of that one bottom speaker. If it weren't for the carrier lock I'd probably switch over to it now and then. The simplicity of the Calendar app for instance is a thing of beauty. Some years ago I fired up the Mac Plus just to be nostalgic. I like it all, lol. Well, to be honest...the newest stuff doesn't interest me much. Not much to adjust / fix/ tweak or consider.
But yeah, thanks to the people here and some research on the net I pretty much know what to expect from the G3. I had a G4 myself back when it was new. I have a Wallstreet in the closet which got in to my wine one night and hasn't woken up since. Love the keyboard on that thing. It'd be nice to get that going too. Ah well, lots to do. Even if it turns out to be a fun distraction, the G3 will be worth my time whatever I end up doing with it.